Understanding Workcenter Roles 
A workcenter role in SAP NetWeaver Portal is a semantic object whose content has been designed and ordered in a structure that fully meets the SAP NetWeaver Standards and Guidelines (S&G) for Pattern-Based User Interfaces. The design-time role structure – which includes folders, pages and iViews – defines the end-user navigation at runtime. For more information about these roles, and how they differ from portal freestyle roles, see What Are Workcenter Roles and Freestyle Roles?
The runtime structure of a workcenter role in the portal is as follows:
Top-level navigation:
This is the role name; selecting it calls up the Overview, which is the first second-level navigation entry.
Second-level navigation entries:
Overview:
A folder that contains a number of worksets that are defined as views, each appearing in the detailed navigation. Each view has its own list of links to services.
Reports:
A launchpad for accessing standardized reports.
Other second-level navigation entries, as required
Service Map:
An iView that provides a list of all services that a user can access in the role. It is an alternative way of accessing the services of the Overview.
Detailed navigation:
List of views:
Access points to applications and transactions relevant to the role, displayed in the content area.
List of services:
Links to complementary applications or transactions that enable the user to perform an activity related to the open view.
Navigation targets:
Where used, links to business objects related to the displayed application, giving dynamic information according to the user role.
Content area:
The main section of the role, displaying the content – pages and iViews – of the selected view.
For an illustration of a workcenter role at runtime, see Structure of a Runtime Workcenter Role.
The design-time editor used to create and edit workcenter-role content is organized according to the actual runtime layout, enabling you to define the entries of the second-level navigation, and subsequently the list of views and services. For an illustration of an open Workcenter Role editor, see Structure of a Design-Time Workcenter Role.
For information about using the Workcenter Role editor, see Adding and Editing Content in Workcenter Roles.